答案及解析

1.B

可以将答案定位在小标题“Moving to Survive”下第二段的前两句话，“Like the shark, most animals use movement to find food. They also use locomotion to escape enemies, find a mate, and explore now territories”。

2.B

题干考查汽车、火箭和潜艇的例子是为了说明可以使人类到达任何环境，其中的“examples of automobiles, rockets and submarines”是关键词，可以将答案定位在文章小标题“Moving to Survive”下这句话，“Humans have the added advantage of using their various inventions to move about in just about any kind of environment. Automobiles, rockets, and submarines transport humans from deep oceans to as far away as the moon”。

3.C

本题考查鲨鱼在水中快速游动的关键是在皮肤。其中的“key”是关键词，可以将答案定位在小标题“Skin Is the Key”下首段的第一句话，“The biologists discovered that the skin of the shark is the key to the animal’s high efficiency in swimming through the water”，与本题句子完全一致，所以直接选择C即可。

4.D

题干中的“collagen fibers to the greatest extent”是关键词，可以将答案定位在小标题“Skin Is the Key”下第二段的第一句话，“The Duke University biologists have found that the greatest stretching occurs where the shark bends its body while swimming”。这与本题句子的内容完全一致，

5.E

题干中“a belted radial tire”是关键词，可以将答案锁定在文章小标题“Source of Energy”下第一段的第三句话，“Just as a radial tire is inflated by pressure, so, too, is the area just under the shark’s collagen ‘radials’”。其中的“just as”和“so”正说明了两者的相似之处在于“inflated by pressure”，所以答案应该是E。

6.G

题干中的关键词是“a laminar flow”，所以可以将答案锁定在文章小标题“Dolphin Has Speed Record”下，根据该节第一段的倒数第三、四句话，“Normally when a fish or other object moves slowly through the water, the water flows smoothly past the body. This smooth flow is known as laminar flow.”。题干是对这两句话的改写，所以正确答案是G。

7.I

题干中“a slug”和“a mouse”均为关键词，可以直接定位在小标题“Other Animals Less Efficient”下第一段的第二句话，“It uses so much energy ... a mouse traveling the same distance uses only one twelfth as much energy”。题干是对该句的同义改写.

8.A

题干中的shark, prey, struggling均为关键词，可以直接定位在A段，Suddenly sensitive nerve ending in the shark’s skin picked up vibrations of a struggling fish.

9.C

在Skin Is the Key中，C段中第二、三句话，The fibers are called collagen fibers.

10.F

在Source of Energy中，可以定位到第二段倒数第一句。